A returnee from another world. He was hit by a truck at the age of 17 and fell into a coma for 17 years. During that time, he was summoned to a world called Gran Bahamaru, where he attained superhuman powers and went on adventures. He is a fanatical Sega fan.

Ojisan’s nephew. After witnessing his uncle’s magic, he begins sharing a room with him in the hopes of making a fortune off his power. He has a passion for fantasy stories, and while he loves hearing about his uncle’s adventures, he’s not above making a few wisecracks.

A university student. She’s a childhood friend of Takafumi and has a crush on him. By chance, she discovers the secret of Takafumi’s uncle’s magic. She’s a sensible person and discourages Takafumi from carrying out some of his more outrageous plans.

An elven adventurer that Ojisan met in the other world. She fell in love with him after he saved her from a tight spot and has been following him around ever since. However, she is a tsundere and tends to hide her feelings of embarrassment by using abusive language.

A descendant of an ice clan that protects the Divine Frozen Sword, a weapon that has been passed down for generations. She has secluded herself in her room and closed off her heart, but when she meets Ojisan, her life is turned upside down.

A beginner adventurer. She was adventuring with her childhood friends Edgar and Raiga when she first met Ojisan. For certain reasons, she is given a title that doesn’t fit her status.